Re: Dinosaurs Eating Mammals! Oh No!

[David Marjanovic <david.marjanovic@gmx.at>]

> The *Zhangheotherium* jaws are paired, while that of *Sinobaatar* is
> single partial dentary. This identification follows specimens of the 
> latter
> which are known to bear an os calcaris and a calcareous spur,

You mean the former. While several other multituberculates (*Kryptobaatar* 
and *Chulsanbaatar* for a start) have spurs, others (the only known foot of 
*Sinobaatar*, and all specimens of *Ptilodus*) lack them.

As for the venom... what use would this kind of spur be without it? What do 
echidnas use their venomless spurs for?